1.
Let R={(3,3),(6,6),(9,9),(12,12),(6,12),(3,9),(3,12),(3,6)}R = \{(3, 3), (6, 6), (9, 9), (12, 12), (6, 12), (3, 9), (3, 12), (3, 6)\} be a relation on the set A={3,6,9,12}A = \{3, 6, 9, 12\}. The relation is